<template>
  <view>
    <view class="goods-list">
      <view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
       <my-goods :goods="goods"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        queryObj: {
          // 查询关键词
          query:'',
          // 商品分类id
          cid:'',
          // 页码值
          pagenum:1,
          // 每页显示多少条数据
          pagesize:10
        },
        goodsList:[],
        total:0,
        // 节流阀
       isloading:false
      };
    },
    onLoad(options) {
      // console.log(options)
      // 页面加载时，将页面参数转存到 this.queryObj 对象中
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      
      // console.log(this.queryObj)
      this.getGoodsList()
    },
    
    methods: {
      // 获取商品列表数据的方法
     async getGoodsList(cb) {
       // (1)打开节流阀
       this.isloading = true
      const {data:res} = await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
      // (2)关闭节流阀
      this.isloading = false
      // 只要数据请求完毕，就立即按需调用 cb 回调函数
      cb && cb()
      if (res.meta.status!==200) return uni.$showMsg()
      
      this.goodsList = [...this.goodsList,...res.message.goods]
      this.total = res.message.total
      },
      
      gotoDetail(goods) {
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id 
        })
      }
    },
    
    // 触底的事件// 触底的事件
    onReachBottom() {
      // 判断是否还有下一页数据
      if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕')
      
      // (3) 判断是否正在请求其它数据，如果是，则不发起额外的请求
      if (this.isloading) return
      
      // 让页码值自增加1
      this.queryObj.pagenum++
      this.getGoodsList()
    },
    
    // 下拉刷新的事件
    onPullDownRefresh() {
      // 重置关键数据
      this.queryObj.pagenum = 1
      this.total = 0
      this.isloading = false
      this.goodsList = []
      
      // 重新发起请求
       this.getGoodsList(() => uni.stopPullDownRefresh())
    }
    

  }
</script>

<style lang="scss">
.goods-item {
  display: flex;
  padding: 10px 5px;
  border-bottom: 1px solid #F0F0F0;
  
  .goods-item-left {
    margin-right: 5px;
    
    .goods-pic {
      width: 100px;
      height: 100px;
      display: block;
    }
  }
  
  .goods-item-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    
    .goods-name {
      font-size: 13px;
    }
    
    .goods-info-box {
      .goods-price {
        color: #C00000;
        font-size: 16px;
      }
    }
  }
}
</style>
